CVE-2026-40148: CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) in MervinPraison PraisonAI
PraisonAI is a multi-agent teams system. Prior to 4.5.128, the _safe_extractall() function in PraisonAI's recipe registry validates archive members against path traversal attacks but performs no checks on individual member sizes, cumulative extracted size, or member count before calling tar.extractall(). An attacker can publish a malicious recipe bundle containing highly compressible data (e.g., 10GB of zeros compressing to ~10MB) that exhausts the victim's disk when pulled via LocalRegistry.pull() or HttpRegistry.pull(). This vulnerability is fixed in 4.5.128.
AI Analysis
Technical Summary
PraisonAI's _safe_extractall() function prior to version 4.5.128 performs insufficient validation on archive contents before extraction, specifically lacking checks on individual member sizes, cumulative extracted size, and member count. This allows an attacker to craft a malicious recipe bundle containing highly compressible data that expands significantly upon extraction, leading to disk exhaustion on the victim system when pulled via LocalRegistry.pull() or HttpRegistry.pull(). The vulnerability is classified under CWE-409 (Improper Handling of Highly Compressed Data) and has a CVSS 3.1 base score of 6.5, indicating a medium severity impact focused on availability. The vulnerability is addressed in PraisonAI version 4.5.128.
Potential Impact
Exploitation of this vulnerability can cause denial of service by exhausting disk space on the affected system due to decompression of maliciously crafted recipe bundles with highly compressible data. There is no impact on confidentiality or integrity reported. No known exploits are currently in the wild.
Mitigation Recommendations
This vulnerability is fixed in PraisonAI version 4.5.128. Users should upgrade to version 4.5.128 or later to remediate this issue. Patch status is not explicitly confirmed beyond this fix version; therefore, verify with the vendor advisory for the latest remediation guidance.
CVE-2026-40148: CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) in MervinPraison PraisonAI
Description
PraisonAI is a multi-agent teams system. Prior to 4.5.128, the _safe_extractall() function in PraisonAI's recipe registry validates archive members against path traversal attacks but performs no checks on individual member sizes, cumulative extracted size, or member count before calling tar.extractall(). An attacker can publish a malicious recipe bundle containing highly compressible data (e.g., 10GB of zeros compressing to ~10MB) that exhausts the victim's disk when pulled via LocalRegistry.pull() or HttpRegistry.pull(). This vulnerability is fixed in 4.5.128.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
PraisonAI's _safe_extractall() function prior to version 4.5.128 performs insufficient validation on archive contents before extraction, specifically lacking checks on individual member sizes, cumulative extracted size, and member count. This allows an attacker to craft a malicious recipe bundle containing highly compressible data that expands significantly upon extraction, leading to disk exhaustion on the victim system when pulled via LocalRegistry.pull() or HttpRegistry.pull(). The vulnerability is classified under CWE-409 (Improper Handling of Highly Compressed Data) and has a CVSS 3.1 base score of 6.5, indicating a medium severity impact focused on availability. The vulnerability is addressed in PraisonAI version 4.5.128.
Potential Impact
Exploitation of this vulnerability can cause denial of service by exhausting disk space on the affected system due to decompression of maliciously crafted recipe bundles with highly compressible data. There is no impact on confidentiality or integrity reported. No known exploits are currently in the wild.
Mitigation Recommendations
This vulnerability is fixed in PraisonAI version 4.5.128. Users should upgrade to version 4.5.128 or later to remediate this issue. Patch status is not explicitly confirmed beyond this fix version; therefore, verify with the vendor advisory for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-09T19:31:56.012Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d843771cc7ad14da3fb5c0
Added to database: 4/10/2026, 12:25:27 AM
Last enriched: 4/17/2026, 11:51:53 AM
Last updated: 5/25/2026, 12:22:08 PM
Views: 86
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